Although the Wasp as opposed to Scout would normally be associated with naval operations, the RAN acquired two Scouts for hydrographic work in 1963. For much of their service career they wore non-standard Westland serials WS101 (coded 841 then 891) & WS102 (842 then 892) although also allocated N8-101 & 102. Both were w/o and the Scout displayed here is actually ex-AAC XR603